<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <title>流加载 - layui</title>
    <link rel="stylesheet" href="../src/css/layui.css">
    <style>
      .flow-demo{height: 400px; overflow: auto;}
      .flow-default{margin-bottom: 32px; border: 1px solid #e2e2e2; text-align: center;}
      .flow-default li{display: inline-block; margin-right: 10px; width: 48%;  margin-bottom: 10px; height: 200px; line-height: 200px; text-align: center; background-color: #eee;}
      .flow-default img{width: 100%; height: 100%; border: none;}
      .flow-default > img{width: 48%; height: 49%; margin-bottom: 5px;}
    </style>
  </head>
  <body class="layui-padding-3">
    <div class="flow-default flow-demo" id="ID-flow-demo"></div>
    <ul class="flow-default" id="test1"></ul>
    <div class="layui-hide">
      <ul class="flow-default" id="test2"></ul>
    </div>

    <div class="flow-default" style="height: 300px; overflow: auto;" id="ID-flow-lazyimg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
      <img src="https://unpkg.com/outeres@0.2.0/img/other/loading.gif" lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg">
    </div>

    <script src="../src/layui.js"></script>
    <script>
    layui.use('flow', function() {
      var flow = layui.flow;

      // 自动加载
      flow.load({
        elem: '#ID-flow-demo', // 流加载容器
        scrollElem: '#ID-flow-demo', // 滚动条所在元素，一般不用填，此处只是演示需要。
        done: function (page, next) {
          // 执行下一页的回调
          // 模拟数据插入
          setTimeout(function () {
            var lis = [];
            for (var i = 0; i < 8; i++) {
              lis.push('<li>' + ((page - 1) * 8 + i + 1) + '</li>');
            }

            // 执行下一页渲染，第二参数为：满足“加载更多”的条件，即后面仍有分页
            // pages 为 Ajax返回的总页数，只有当前页小于总页数的情况下，才会继续出现加载更多
            next(lis.join(''), page < 10); // 此处假设总页数为 10
          }, 300);
        },
      });

      // 手动加载
      var flowInst = flow.load({
        elem: '#test1', // 流加载容器
        // scrollElem: '.flow-default', // 滚动条所在元素，默认 document
        // end: '没有更多数据',
        isAuto: false,
        isLazyimg: true,
        done: function(page, next) { // 加载下一页
          console.log('done:', page)
          setTimeout(function(){
            var lis = [];
            for(var i = 0; i < 6; i++){
              lis.push('<li><img lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg?v='+ (page+i) +'"></li>')
            }
            next(lis.join(''), page < 3);
          }, 300);
        }
      });

      // 重载
      flowInst.reload({
        moreText: '...'
      });

      flow.load({
        elem: '#test2', // 流加载容器
        isLazyimg: true,
        done: function(page, next) { // 加载下一页
          setTimeout(function(){
            var lis = [];
            for(var i = 0; i < 6; i++){
              lis.push('<li><img lay-src="https://unpkg.com/outeres@0.2.0/demo/wallpaper.jpg?v='+ (page+i) +'"></li>')
            }
            next(lis.join(''), page < 3);
          }, 300);
        }
      });

      // 按屏加载图片
      flow.lazyimg({
        elem: '#ID-flow-lazyimg img',
        scrollElem: '#ID-flow-lazyimg',
        id: 'flow-lazyimg-demo'
      });
    });
    </script>
  </body>
</html>
